<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>User</title>
</head>
<body>
    <h1>Hello, World!</h1>
    <form action="{{ url_for('user.upload') }}" method="post" enctype="multipart/form-data">
        <label for="fid"><input type="file" id="fid" name="f1"></label>
        <input type="submit" value="上传">
    </form>
</body>
</html>